Process of molding fence-posts.



S. L. CLARK.

rnoonss 0F MOLDING FENCE POSTS.

APPLICATION FILED FEB. 21,1913.

Patented Sept. 16, 1913.

.x u. H.

SPENCER L. CLARK, 0F HALE, MICHIGAN.

PROCESS OF MOLDING FENCE-POSTS.

Application filed February 21, 1913.

Specification of Letters Patent.

Patented Sept. 16, 1913.

Serial No. 749,998.

To all whom it may concern Be it known that I, Srnnonn L. CLARK, a citizen of the United States, residing at llale, in the county of Iosco, State of Michigan, have invented certain new and useful Improvements in Processes of Molding Fence- Posts; and I do hereby declare the follow ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in artificial stone posts, and the mold employed in making same.

The principal object of the invention is to provide a simple artificial stone post having a wooden portion to which the fence wires may be nailed, and the mold by means of which the wooden portion of the post is formed.

Other objects and advantages will be apparent from the following description and with particular reference to the accompanying drawings.

in the drawings: Figure 1 is a top plan view of my mold used in forming the posts. Fig. 2 is a vertical longitudinal section on the line 2-2 of Fig. 2. Fig. 3 is a transverse section on the line 3-3 of Fig. .2. Fig. .1: is a perspective view of the finished post.

Referring particularly to the drawings, 10 represents the outer casing of the mold, in the upper portion of which is termed a straight bore 11, said bore extending a dis tance down into the mold sullicient to term the base of the post. Extending from the lower end of the straight bore 11 is a down wardly tapering bore 12, which extends to the bottom of the mold. in one wall of the tapering bore is formed a dove-tail groove 13, running the entire length of the said bore, and into which is placed a dove-tailed strip 14L, having on one side the rib 15. This rib 15, when the strip is seated within the groove is adapted to project into the bore. A conical member 16 is provided for insertion within the mold, said member being of a length equal to the length of the mold casing 10.

In molding a post with my mold, the strip 14 is positioned in the groove, and the conical or tapering bore as well as the straight bore is tilled with plastic material, or rather partially filled when the conical member 16 is inserted therein, the point inserting itself in the plastic material at the bottom of the mold. A suitable brace 17 is provided at the top of the mold for engagement with the upper end of the conical member 16 to hold the said member in a centered position, so that the post will be of equal thickness in all parts of its circumference. 'lhe rib portion 15 ot the strip l-it projecting into the tapered cavity forms a vertical opening in one side of the tapered portion of the post, the pur pose of which will he referred to later.

After the plastic material has become slightly set, the conical member 15 is removed trom the mold, and the cavity within the plastic material is then tilled with sawdust or the like and clamped down under heavy pressure, so that the material will be highly compressed into a solid mass. It will be noted that the tongue 15 forms an opening in one side of the tapered portion of the post, and when the sawdust is packed into the cavity of the post said sawdust will extend out into the opening, so that nails, or staples may be readily driven thcreinto to hold wires to the post.

ln llig. tlthere is shown a view of a completed post which comprises the cylindrical base portion 10, and the upwardly tapering post proper portion ii, in which is formed the elongated opening 12, through which staples or nails may be driven into the intcrio packing and sawdust 1.0.

From the foregoing it will be seen that I have provided a simple post which combines the features oi. the artificial post which is prool against decay, and has the advantage ot the wood post, in that wires may be readily nailed thereto.

ll hat is claimed is:

The process oil? 'lorming an artificial stone post consisting oi providing a mold casing, placing a conical tiller member therein, placing a longitudinally ribbed member in the mold, filling the mold with plastic material, withdrawing the conical member, then tilling the cavity within the molded article with sawdust and tamping the same.

in testimony whereof, I ailix my signature, in the presence oi? two witnesses.

Stl lNCltlt L. CLARK.

Witnesses Vio'ronm NUNN, ANNA KELLY.

Copies of this patent may be obtained for five cents each, By addressing the Commissioner of Patents,

"Washington, D. G. 

